package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Api(tags = "C端-菜品管理")
public class DishController {

    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;
    /*
    * 根据分类id查询菜品*/
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> selectDishByCategoryId(Long categoryId){

        // 构造redis中的key，规则： dish_分类id
        String key = "dish_" + categoryId;

        // 查询redis中是否存在菜品数据
        List<DishVO> list = (List<DishVO>) redisTemplate.opsForValue().get(key);
        if(list != null && list.size()>0)
        {
            // 存在，直接返回
            return  Result.success(list);
        }
        // 查询起售中的的菜品
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);
        // 如果redis中不存在，则查询数据库
        list = dishService.selectDishBycategotyId(dish);
        // 将查询结果存入redis中
        redisTemplate.opsForValue().set(key,list);
        return Result.success(list);
    }
}
